Power supply apparatus



FIG. 1 is a front elevational view of a power supply apparatus accordingto our new design;

FIG. 2 is a rear elevational view of the power supply apparatus shown inFIG. 1;

FIG. 3 is a top plan view of the power supply apparatus shown in FIG. 1;

FIG. 4 is a bottom plan view of the power supply apparatus shown in FIG.1;

FIG. 5 is a left side elevational view of the power supply apparatusshown in FIG. 1;

FIG. 6 is a right side elevational view of the power supply apparatusshown in FIG. 1;

FIG. 7 is a front, left perspective view of the power supply apparatusshown in FIG. 1; and,

FIG. 8 is a rear, right perspective view of the power supply apparatusshown in FIG. 1.

The ornamental design for a power supply apparatus, as shown and described. 